package risoe.syslab.fhnew.hw;

/*
 * Copyright (c) 2012-2014, Technical University of Denmark (DTU)
 * All rights reserved.
 * 
 * The Flexhouse 2.0 platform ("this software") is licensed under the
 * BSD 3-clause license.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *   - Neither the name of DTU nor the names of its contributors may be used to
 *     endorse or promote products derived from this software without specific
 *     prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE TECHNICAL UNIVERSITY OF DENMARK BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

import java.net.InetAddress;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Vector;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;

import risoe.syslab.fhnew.config.ActuatorConfig;
import risoe.syslab.fhnew.config.DeifInterfaceConfig;
import risoe.syslab.fhnew.config.SensorConfig;
import risoe.syslab.hw.pollserver.instrument.deif.DEIFInstrumentPollServerThread;

public class DEIFTCPInterface extends HardwareInterface implements Runnable{

	private static final long POLLCYCLE=500; // poll every 0.5s

	private DEIFInstrumentPollServerThread pollServerRunnable = null;
	private Thread pollServerThread = null;
	private InetAddress instrumentIP;
	private String instrumentType;
	private int modbusId;
	private double ctRatio;

	HashMap<String, String> mChannelMap = new HashMap<String, String>();
	private ScheduledExecutorService mExecutor = Executors.newSingleThreadScheduledExecutor();
	private boolean mIsConnected = false;

	public DEIFTCPInterface(DeifInterfaceConfig hic) {
		super(hic);
		instrumentIP=hic.getIPAddress();
		instrumentType=hic.getDeviceType();
		ctRatio=hic.getCTRatio();
		modbusId=hic.getModbusId();
	}

	public void startInterfaceImpl(ArrayList<SensorConfig> sensors, ArrayList<ActuatorConfig> actuators) {
		// Map channels to names of sensors
		for (SensorConfig s : sensors){
			if (s.getInterfaceName().equals(getName())){
				// This is one of the DEIF instruments belonging to this interface
				mChannelMap.put(s.getInterfaceAttributes().get("channel"), s.getName());
			}
		}

		ArrayList<String> meternames = new ArrayList<String>();
		meternames.add(getName());
		ArrayList<String> metertypes = new ArrayList<String>();
		metertypes.add(instrumentType);
		ArrayList<Integer> modbusids = new ArrayList<Integer>();
		modbusids.add(modbusId);
		ArrayList<Double> ctfactors = new ArrayList<Double>();
		ctfactors.add(ctRatio); // Current transformer rating, primary side

		pollServerRunnable = new DEIFInstrumentPollServerThread(instrumentIP.getHostAddress(), true,
				new Vector<String>(meternames), new Vector<String>(metertypes), 
				new Vector<Integer>(modbusids), new Vector<Double>(ctfactors));
		pollServerThread = new Thread(pollServerRunnable);
		pollServerThread.setName("DEIFInstrumentPollServerThread <"+getName()+">");
		pollServerThread.start();

		getLogger().logEvent(getName(), "Initialization", "Complete");
		mIsConnected = true;
		
		// Start polling
		mExecutor.scheduleAtFixedRate(this, 0, POLLCYCLE, TimeUnit.MILLISECONDS);
	}

	public void stopInterfaceImpl() {
		mExecutor.shutdownNow();
		pollServerRunnable.stop();
		pollServerThread.interrupt();
		pollServerRunnable=null;
		pollServerThread=null;
	}

	@Override
	public void run() {
		// Only poll for the channels associated with this interface
		mData.clear();
		for (String channel : mChannelMap.keySet()){
			mData.put(mChannelMap.get(channel), pollServerRunnable.getValue(getName(), channel));
		}
		notifyProcessImage();
	}

	@Override
	public boolean isConnected() {
		return mIsConnected;
	}

	@Override
	public void applyActuation(Actuator actuator) {
		// This interface contains no actuators
	}
}

